Drip-pan alarm



June 12, 1923.

A. WALLACE DRIP PAN ALARM Filed NOV. 17

WITNESSES Arron/ms Patentedlune 12; 1923.

' 1 bi r-ran ALARM, I

' 'f'np ncat in filed Nt embr' 17, 19221 Serial 1a. sortie. I i

To all whom it may concern:

Be it known that I, ANTHONY WALLACE,

a subject of the King of Great Britain, and

a resident of the city of New York, borough improved in various particulars with respectto the manner inwhich the bell clapper is controlled and novel means whereby to unfailingly cause the clapper to be released by the float through the medium of devices involving the minimum number of part of simple form.

Reference is to be had to the accompanying drawings forming a partof this specification, it beingunderstood that the drawings are merely illustrative of one example of the invention.

Figure 1 is a vertical section of a drip pan alarm embodying my invention applied to a panshown in part;

Figure 2 is a transverse vertical section on the line 2-2, Figure 1;

Figure 3' is a horizontal section on the line 33, Figure 1.

In constructing an alarm in accordance with my invention a box or casing 5 is provided with a clip 10 or equivalent means to fit over the edge of the drip pan A. A gong 11 of known form is provided, the numeral 12 indicating the main arbor on which the gong is secured; 13, the clapper carried by the pallet 14, controlling a con ventional clock train 15, all of which parts are of known form and arrangement and therefore need no further description.

Mounted on the arbor of the pallet 14 to vibrate therewith is a lateral arm 16 which therefore is subject to the action of the clock train. In order to prevent movement of the arm 16 and therefore hold the pallet 14 and the clock'train inactive, I provide above the arm 16 a gravity latch plate 17 hung suitably as at 18 in the casing 5 near the top, said latch plate 17 having a downturned end adapted to be disposed in front of the arm 16. It will be obvious that with lj nirr nouvwarrior, or unwjyon r, f

thelatch 17 engaging arm the clock train cannot function to vibrate the clapper 13 and sound the gong 11.

The float 19l1as a stem 20 advantageously disposed obliquely and extendingv freely through an oblique bearing 21in the casing '5 so'that the float may freely rise andfall with the rise and fall of.water in the pan A. i

The upper end 'of the float stem 20 is disposed directly beneath "the'latch 17 and therefore when the float rises the stem 20 of the clock spring 22 of the clock train 15.

In order to manually control the clapper,

13 and provide for resetting the same con- 23 fulcrumed atone end on the top of the to be manually moved with the finger to will automatically lift the latch 17 out of" engagement with the arm 16, thus permitting the pallet 'l lto vibrate under the action trolled byfthe latch 17, I provide a lever swing the clapper 13 to a position to lock 7 the pallet 14 against vibration so that the gong willnot sound when the alarm is detached from the pan A for emptying said pan. When the alarm is replaced on the pan A after the latter has beenemptied,

the lever 23 ismoved away from clapper 13, thereby leaving said clapper subject to the release of the arm 16 by the lifting of the latch 17 by float 19.

By disposing the bearing and stem'2 l obliquely the float 19 is brought within the." planes of the sides of the casing 5 or sub-' stantially so to make for compactness and the angularity of the stemand bearing is not such as to prevent the free movement of the float.

I would state in conclusion that while the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictly to the exact details herein illustrated, since, manifestly, the same can.

be considerably varied without departure from the spirit of the invention as defined in the appended claims.

Having thus described my invention, I

pan, an audible alarm supported by said casing, said alarm'including a clock train and pallet, a lateral arm rigid with the pallet, a gravity latch plate hinged at one.v end in the casing above said arm and havinga downwardly directed end normally disposed in front of the path of vibration of said arm to prevent movement of the arm, a bearing in the casing beneath the latch plate, and a float below the casing 5 and having a stem extending through said bearing and adapted to engage said latch plate and disengage vthe same from said lateral arm with the rising of the float.

2. A drip pan alarm including a gong and clapper, a clock train to operate the 10 clapper, a later-al arm adapted to vibrate with the clapper, a gravity latch plate to engage said arm and restrain the clock train, a float having an obliquely disposed stem enga ing said latch and an oblique bearing 15 in w ich said stem has movement, said bearing disposed beneath said latch plate.

ANTHONY WALLACE. 

